Double-action pump



(No Model.) G'. B. MCCOY.

DOUBLE ACTION PUMP. N0. 276,614. Patented May 1,1883.

m finessi' Invenior:

' To all whom it may concern UNITED STATES PATENT OFFICE. I

GEORGE B. MCCOY, OF STAMPERS CREEK, INDIANA.

DOUBLE-ACTION PUMP.

SPECIFICATION forming part of Letters Patent No. 276,614, dated May 1,1883. Application filed April 7, 1882. (No model.)

Be it known that I, GEORGE E. MeOoY, of Stampers Creek, in'the county ofOrange and State ofIudiana, haveinvented a new and useful Improvement inDouble-Action Pumps, which improvement is fully set forth in thefollowing specification and accompanying drawing, in which the figure isa vertical sectional view of the improved pump.

The object of my invention is to provide an improved method ofmanufacturing pumps; and it consists in having two vertical cylinderssecured to a horizontal cylinder beneath, and riveted near the upper endby a pipe having a discharge-spout, the lower cylinder having asupply-port, and all the parts forming the piston, cylinders, dischargeand supply ports united to each other by screw-threads, so that thevarious parts may be readily duplicated, or so that the pump may bequickly taken apart and put together.

In the accompanying drawing, A represents a suitable frame or standards,united at the upper ends by a cross beam or arch, B. At the base,between the standards, is a horizontal cylinder, 0, having centrally onthe under side asupply-pipe, I). Near each eud,on the upper side,arelocated the vertical piston-cylinders E. Near the upper ends is across pipe or tube, F, and leading from the upper side preferably ofthis connectingtube .is a discharge spout or pipe, G.

H is the piston-head, having the apertures I and the upwardly-openingvalves J.

K K are the piston-rods, hinged at the upper ends to the connecting-rodsL, which latter are in turn hinged to the lever M. This lever is pivotedto the beam or arch B at a point midway between the connecting-rods L.

N is the head of the cylinder, screw-t-h readed to fit thescrew-threaded aperture of the cylinder E. The upper side of this headis provided centrally with a cavity, 0, to receive packing, and P is afollower which rests on the packing. Thefollowerisin turn held in thecavity by means of the cap Q, which is adapted to screw onto the upperend of the head N.

The horizontal cylinder 0, the vertical cylinder E, and theconnecting-tube F are each provided with flanges R at theirconnectingpoints, and screw-threaded within. The slip ply-pipe D,cylinders E, connecting-tubeF, and discharge-spout G are eachscrew-threaded on the ends to fit the screw-threaded flanges at thevarious points.

It will thus be seen that the pump constructed in this manner is made inindependent parts united, by screw-threads, as shown, enabling the sameto be readily taken apart or set up. I

It is obvious that the cylinders and connect,-

in g-tubes can be made of either woodo-r metal, united substantially inthe manner shown.

S S are the valves at the lower ends of the piston-cylinders; but these,with the valves in the piston-head and the piston, form no part of myinvention.

I am awareit is not new to consti uct a'pulnp with two upright cylindershaving the crosspipes, valves, and pistons, and my invention has noreference thereto; but

What I claim is-- A pnmphaving the several parts, consisting ot'thesupply-pipe D, horizontal cylinder 0 piston-cylindersE E,connecting-pipe F, and discharge-tube G, constructed independently ofeach other and united by screw-threads, substantially as and for thepurpose herci'n shown.

In testimony that I claim the foregoing I have hereunto set my hand,this 29th day of March, 1882, in the presence of witnesses.

- GEORGE B. MeUOY.

Witnesses:

GEORGE W. T. GARDNER, VIRGIL A. VoYLEs.

